Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong dong » trong cong, trong nong, trong dang
dong chan » dong chuan, jong chan, dong chen
ho chieu » theo chieu, hoc thieu, doi chieu
bay dung » xay dung, gay dung, ban dung
chan cau » phan cau, can cau, chinh cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - ((thanh tung) or (thanh cong)) bay dung trong dong chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((thanh tung) OR (thanh cong)) bay dung trong dong chan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh tung) or (thanh cong)) bay dung trong dong chan cau*.